Story Structure — 4 Plot Phases
Murder in the Library
A hidden attacker murders the household patriarch at midnight. The household discovers the body, and Bruce brings Kayton into the investigation.
Key Events
-
Midnight Murder — The household patriarch denounces an unseen enemy, reaches for the telephone, and is murdered.
Location: Library
-
Household Finds Body — Mary, Mrs. Wyatt, and servants rush into the library and discover the dead victim. Characters: Mary Morgan, Mrs. Wyatt
Location: Library
-
Bruce Returns — Bruce arrives the next morning after being estranged from his father for months. Characters: Bruce Argyle
Location: Argyle Home
-
Detective Engaged — Bruce engages Kayton, a clever detective, to investigate the death. Characters: Bruce Argyle, Alexander Kayton
Location: Argyle Home
-
Inheritance Motive — Suspicion falls on Mary because the inheritance was restored to Bruce and removed from her. Characters: Bruce Argyle, Mary Morgan, Mrs. Wyatt
Location: Argyle Home
-
Mutual Protection — Mary suspects Bruce, yet both attempt to protect each other from suspicion. Characters: Mary Morgan, Bruce Argyle
Location: Argyle Home
Suspicion and Deception
Mary becomes a public suspect because of the inheritance change. Kayton examines the household and obtains Mary's fingerprints through deception.
Key Events
-
Mutual Protection — Mary suspects Bruce, yet both attempt to protect each other from suspicion. Characters: Mary Morgan, Bruce Argyle
Location: Argyle Home
-
Fingerprint Refusal — Mary refuses fingerprinting, increasing Kayton's suspicion of her. Characters: Alexander Kayton, Mary Morgan
Location: Argyle Home
-
Fingerprint Ruse — Kayton obtains Mary's fingerprints later by using a ruse. Characters: Alexander Kayton
Location: Argyle Home
-
Hurley Assists Kayton — Hurley, a former attorney and permanent guest, cooperates with Kayton during the inquiry. Characters: Hurley, Alexander Kayton
Location: Argyle Home
-
Counterfeit Bill Found — Kayton finds a counterfeit five-hundred-dollar bill in a library table drawer. Characters: Alexander Kayton
Location: Library
-
Counterfeiting Connection — Kayton links the perfect counterfeit to the supposedly dead leader of an old counterfeiting gang. Characters: Alexander Kayton, Hurley
Location: Investigation Office
The Counterfeit Trail
A counterfeit bill links the murder to an old counterfeiting network. Kayton advertises for a missing woman and prepares a controlled hiding place for Mary.
Key Events
-
Counterfeiting Connection — Kayton links the perfect counterfeit to the supposedly dead leader of an old counterfeiting gang. Characters: Alexander Kayton, Hurley
Location: Investigation Office
-
Missing Woman Advertised — Because the missing woman is allegedly mentioned in the will, Kayton advertises for her. Characters: Alexander Kayton
Location: Investigation Office
-
Mary Enters Hiding — Mary goes to a boarding house so that her apparent disappearance can help Kayton's trap. Characters: Mary Morgan, Alexander Kayton
Location: Boarding House
-
Boarding House Wired — Kayton's men install dictaphones throughout the boarding house. Characters: Alexander Kayton, Sam
Location: Boarding House
-
Attic Surveillance — Sam and the radio operators monitor every conversation from the neighboring attic. Characters: Alexander Kayton, Sam
Location: Neighboring Attic
-
Kreisler Talk Overheard — Surveillance captures conversations about Kreisler and hears Hurley acting familiarly with the occupants. Characters: Alexander Kayton, Sam, Hurley
Location: Neighboring Attic
The Boarding House Trap
Kayton and Sam wire the boarding house and monitor its conversations. Suspicious gang members threaten Mary's position while Hurley's behavior exposes his connection to the mystery.
Key Events
-
Kreisler Talk Overheard — Surveillance captures conversations about Kreisler and hears Hurley acting familiarly with the occupants. Characters: Alexander Kayton, Sam, Hurley
Location: Neighboring Attic
-
Mary Nearly Ejected — A gang member grows suspicious of Mary and nearly ejects her before Kayton's men intervene. Characters: Mary Morgan, Alexander Kayton
Location: Boarding House
-
Hidden Identity Revealed — Kayton reveals the concealed family identity behind the boarding-house occupant and connects it to Mary. Characters: Mary Morgan, Alexander Kayton, Hurley
Location: Boarding House
-
Murderer Exposed — Kayton plays Hurley against the concealed woman, establishing that Hurley is the counterfeiter and the killer. Characters: Hurley, Alexander Kayton
Location: Boarding House
-
Arrest and Embrace — Hurley is arrested for murder, and the story ends with Kayton and Mary embracing. Characters: Hurley, Alexander Kayton, Mary Morgan
Location: Boarding House